Backup light does not work
 

Hi,

Was trouble shooting my backup light last night. (1979 930)

Backup switch work fine on transmission.

From what I can see, pin 5 & 6 is used on the 14 pin connector, where 5 comes from fuse box and 6 goes to backup light.

I measures no current on pin 5, so I guess it is some place between 14 pin connector and fuse box.

From what I can see from diagram, it should be a green/yellow cable.

Could not find this color going to the fuse box.

Also tried to make a jumper cable from another pin that had current to pin 5, just to test, but even then the light did not work.

I tested the connection between pin 6 and the tail light backup light. there was connection.

Any suggestions?

Have you pulled bulbs and checked for power there? Sometimes the obvious is overlooked. Ask me how I know! Happy turkey day

Yes I did. No power.
Measured the connectivity from the bulb + side to pin 6 on 14 pin connector. was good